[#68478] Looking for MRI projects for Ruby Google Summer of Code 2015 — Tony Arcieri <bascule@...>
Hi ruby-core,
10 messages
2015/03/10
[#68480] Re: Looking for MRI projects for Ruby Google Summer of Code 2015
— SASADA Koichi <ko1@...>
2015/03/10
I have.
[#68549] Re: Looking for MRI projects for Ruby Google Summer of Code 2015
— SASADA Koichi <ko1@...>
2015/03/17
I sent several ideas on previous, mail, but they are seems rejected?
[#68493] [Ruby trunk - Feature #10532] [PATCH] accept_nonblock supports "exception: false" — nobu@...
Issue #10532 has been updated by Nobuyoshi Nakada.
5 messages
2015/03/11
[#68503] Re: [Ruby trunk - Feature #10532] [PATCH] accept_nonblock supports "exception: false"
— Eric Wong <normalperson@...>
2015/03/12
Committed as r49948.
[#68504] Re: [Ruby trunk - Feature #10532] [PATCH] accept_nonblock supports "exception: false"
— Nobuyoshi Nakada <nobu@...>
2015/03/12
On 2015/03/12 12:08, Eric Wong wrote:
[#68506] Seven stacks (and two questions) — Jakub Trzebiatowski <jaktrze1@...>
The Ruby Hacking Guide says that Ruby has=E2=80=A6 seven stacks. Is it =
5 messages
2015/03/12
[#68520] Possible regression in 2.1 and 2.2 in binding when combined with delegate? — Joe Swatosh <joe.swatosh@...>
# The following code
3 messages
2015/03/14
[#68604] GSOC project Cross-thread Fiber support — surya pratap singh raghuvanshi <oshosurya@...>
- *hi i am a third year computer science student interested in working
6 messages
2015/03/22
[#68606] Re: GSOC project Cross-thread Fiber support
— Tony Arcieri <bascule@...>
2015/03/22
Hi Surya,
[#68619] Re: GSOC project Cross-thread Fiber support
— surya pratap singh raghuvanshi <oshosurya@...>
2015/03/23
hi tony,
[ruby-core:68633] [Ruby trunk - Bug #10999] [PERF] bm_hash_aref_flo.rb
From:
nobu@...
Date:
2015-03-25 02:20:33 UTC
List:
ruby-core #68633
Issue #10999 has been updated by Nobuyoshi Nakada.
It is not a realistic benchmark, that integer parts are all different.
Adding floats with same integer parts shows very bad result in the older version, whereas the latest version does not.
~~~ruby
h = {}
strs = [*1..10000].map! {|i| i.fdiv(100)}
strs.each { |s| h[s] = s }
50.times { strs.each { |s| h[s] } }
~~~
-----------------------------------------------------------
benchmark results:
Execution time (sec)
name |old |new
-------------|------:|------:
hash_aref_flo| 0.942| 0.084
Speedup ratio: compare with the result of `old' (greater is better)
name |new
-------------|------:
hash_aref_flo| 11.175
This is because the older code ignored fraction parts, and it became neary linear search.
----------------------------------------
Bug #10999: [PERF] bm_hash_aref_flo.rb
https://bugs.ruby-lang.org/issues/10999#change-51930
* Author: Guo Xiang Tan
* Status: Open
* Priority: Normal
* Assignee: Nobuyoshi Nakada
* ruby -v: 2.3.0dev (2015-03-18 trunk 49999) [x86_64-linux]
* Backport: 2.0.0: UNKNOWN, 2.1: UNKNOWN, 2.2: UNKNOWN
----------------------------------------
Before: 0.066s
After [3bcf9fb53e4b9efabb15a3091fddfb68e5b6fbbe](https://github.com/ruby/ruby/commit/3bcf9fb): 0.094
To view the full graph, please visit http://rubybench.org/ruby/ruby/commits?result_type=hash_aref_flo&display_count=200.
To issue is meant to highlight what we're seeing at RubyBench.org, feel free to close this issue if the trade offs were intended.
--
https://bugs.ruby-lang.org/